{"id":2013732,"url":"https://alion.io/job/cmc-markets-senior-network-and-security-engineer","title":"Senior Network and Security Engineer","company":{"id":449723,"name":"CMC Markets","domain":"cmcmarketsplc.com","url":"https://alion.io/company/cmc-markets-2","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Welcome to the Jungle","truth_index":{"grade":"A","score":95,"open_postings":4,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":70,"computed_at":"2026-10-26T05:57:25Z"}},"role":"Security","role_family":"Security","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":84000,"max_usd":155000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":36},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-06-21T00:06:18Z","employer_posted_date":"2026-10-07","last_verified_at":"2026-10-26T16:42:04Z","board_verified":true,"closed_at":null,"days_open":127,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":127},"description":"Join CMC Markets as a Senior Network & Security Engineer. In this role, you will design, build, and support our global network infrastructure, ensuring high performance, resilience, and security across on-premise and cloud environments. You will work on both project delivery and business-as-usual operations, supporting critical trading platforms in a fast-paced, regulated environment. Key responsibilities include implementing and maintaining the global LAN, WAN, and cloud network infrastructure, monitoring network performance, and leading the investigation and resolution of network and security incidents.\nMissions\nDesign, implement, and maintain CMC Markets’ global LAN, WAN, and cloud network infrastructure, ensuring high performance, resilience, and security.\nMonitor network performance, capacity, and availability, providing proactive support and troubleshooting, and lead investigation and resolution of network and security incidents.\nCollaborate closely with internal technology teams to resolve connectivity issues, and ensure all work is delivered in line with CMC Markets’ policies, procedures, and compliance obligations.\nProfil recherché\n - Hands-on experience with multicast networking- Strong experience operating and troubleshooting Cisco ACI environments\n- Solid knowledge of Cisco Catalyst and Nexus switch platforms\n- CCNP-level networking knowledge or certification\n- Excellent documentation, communication and stakeholder engagement skills\n- Proven experience designing and building data centre and cloud networks\n- Experience supporting Market Data network feeds\n- Exposure to SD-WAN technologies\n- Experience supporting low-latency production networks within trading or financial services environments\n- Hands-on experience with Palo Alto firewalls\n- Experience with Cisco ASA and Meraki Wireless","description_format":"text","description_chars":1827,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-07T13:07:36Z"}],"visa":[],"liveness":{"score":22,"band":"cold","label":"Long shot","p_open":1,"p_active":0.606,"p_room":0.36,"age_days":127,"expected_fill_days":70,"reasons":["conf:2","velocity","win:tail","crowd:"],"computed_at":"2026-10-26T05:57:25Z"},"pay":null,"html_url":"https://alion.io/job/cmc-markets-senior-network-and-security-engineer","json_url":"https://alion.io/job/cmc-markets-senior-network-and-security-engineer.json","meta":{"generated_at":"2026-10-26T19:39:14Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":26469,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-27T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":449723},"rest":"https://alion.io/mcp/rest/get_company?id=449723"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcmc-markets-senior-network-and-security-engineer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fcmc-markets-senior-network-and-security-engineer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fcmc-markets-senior-network-and-security-engineer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/cmc-markets-senior-network-and-security-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcmc-markets-senior-network-and-security-engineer"}]}